Casing-head.



F. J. MOSER.

CASING HEAD.

vAPPLIMTION FILED APB. 11, 1912.

5g-7-1..' l" Fig 0% low and forming a means of communicating between the casing and the side opening in the head; a packing ring on the extension between the shoulders, and a screw connection between one of said shoulders and the extension whereby the distance between the shoulders may be reduced to crowd the ring e between the extension and the casing.

2. The combination of a casing end; a

casing head; a Urigid extension on the head the head to reduce the distance between the shoulders whereby the ring may be crowded between the casing and the extension.

3. The combination of a belled casing end; a casing head; a rigid extension on the head projectlng into the casing and having shoulders on` its periphery spaced apart axially, said extension beinghollow; a packing ring on said extension between thev shoulders; and a screw connection between the extension and one of the shoulders adapted to be actuated by the turning of the head to reduce the distance between the shoulders whereby the ring may be crowded between the casing and the extension.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

FRED JOSEPHMOSER.

l/Vitnesses W. H. BUNCE,

JOSEPHINE ROCHE. 

